Does current data imply a Baroque neutrino sector?

1. Does current data imply aBaroqueneutrino sector? 廖佳军 中山大学 Based on work in JL and Marfatia, Phys. Rev. Lett. 117, 071802 (2016) [arXiv: 1602.08766 ]  JL, Marfatia and Whisnant, Phys. Rev. D 99, 015016  (2019) [arXiv: 1810.01000 ]  High Energy Conference, SYSU, Guangzhou, 1/21/2019

2. A Brief History of Western Art 14th century 18th century 16th century Neoclassism Impressionism Baroque /Rococo Renaissance Classical Medieval Madonna and Child By Duccio di Buoninsegna Mona Lisa By Leonardo da Vinci Woman with a Parasol By Claude Monet Madame de Pompadour By Francois Boucher Baroque Neutrinos

3. Outline • Introduction • Tensions in light sterile neutrino searches • 3+1 with NSI • Summary Baroque Neutrinos

4. Outline • Introduction • Tensions in light sterile neutrino searches • 3+1 with NSI • Summary Baroque Neutrinos

5. A Classical picture: SM Neutrinos: Massless, Neutral, Weak interaction Baroque Neutrinos

6. Renaissance: Neutrino Oscillations Kajita@Super-K McDonald@SNO Flavor Eigenstate Mass Eigenstate won Nobel Prize in 2015 Daya Bay, RENO, T2K… SK, K2K, MINOS… SK, SNO, KamLAND… 0 Baroque Neutrinos

7. Oscillation Parameters [Ivan Esteban et al. 1811.05487] • CP violation • Mass Ordering, >0 or <0 • Octant, > or Primary goals: Next-generation oscillation experiments: JUNO, DUNE, T2HK, MOMENT,…

8. Baroque neutrinos • Sterile neutrinos • Nonstandard interactions • Lorentz and CPT violation • Non-unitary mixing • Neutrino decay • …… “All things are possible until they are proved impossible - and even the impossible may only be so, as of now.” Pearl S. Buck (赛珍珠) Baroque Neutrinos

9. Outline • Introduction • Tensions in light sterile neutrino searches • 3+1 with NSI • Summary Baroque Neutrinos

10. LSND Decay at Rest Excess ) m, [PRD 64, 112007 (2001)] Baroque Neutrinos

11. MiniBooNE Purpose: Check LSND signal m, , A total excess of 460.595.8 events (4.8) Consistent with LSND LSND+MB combined has 6.1 𝜎 significance Caveat: background mismodeling [PRL 121, 221801 (2018)] Baroque Neutrinos

12. Appearance vs Disappearance active () appearance experiments () disappearance experiments 3+1 mass () disappearance experiments Upper bounds on and can be used to constrain [Okada, Yasuda, IJMPA 12 (1997) 3669-3694] [Bilenky, Giunti, Grimus, EPJC 1 (1998) 247] Baroque Neutrinos

13. Reactor antineutrino anomaly ✘ flux calculation has been called into question (“5 MeV bump”, and IBDyield from Daya Bay) • Gallium neutrino anomaly ✘ detector efficiency is unknown [RENO, Phys. Rev. Lett. 116, 211801 (2016)] [Daya Bay, Phys. Rev. Lett. 118, 251801 (2017)] [Gariazzoet.al., Phys.Lett. B782, 13 (2018) ] Baroque Neutrinos

14. DANSS Single Movable detector [1810.01000 ]  [DANSS, Phys. Lett. B 787,56 (2018)] Dentleret.al., JHEP 1808, 010 (2018) Gariazzoet.al., Phys. Lett. B 782, 13 (2018) Baroque Neutrinos

15. () disappearance MINOS+ IceCube crust mantle core 1710.06488 If we take the results of MiniBooNE, MINOS+ and IceCube at face value, a baroque new physics scenario must be introduced to explain all the data. Baroque Neutrinos

16. Outline • Introduction • Tensions in light sterile neutrino searches • 3+1 with NSI • Summary Baroque Neutrinos

17. NSI to rescue 3+1 [Wolfenstein, Phys. Rev., D17, 2369 (1978)] Neutrino propagation in matter Neutrino production and detection [Kopp et.al., Phys. Rev. D 77, 013007 (2008)] Baroque Neutrinos

18. IceCube H Antineutrino oscillations with eV-mass sterile undergo resonance enhancement at TeV [Nunokawa, et al., Phys. Lett. B 562, 279 (2003)] Resonance enhancement at TeV can be suppressed if are large [Liao and Marfatia, Phys. Rev. Lett. 117, 071802 (2016)] Baroque Neutrinos

19. MINOS+ Occam’s razor: 3+1+NSI survival prob at FD same as 3-neutrino case Baroque Neutrinos

20. MINOS/MINOS+ IceCube/DeepCore LSND+MiniBooNE CDHS [Liao, Marfatia and Whisnant, Phys. Rev. D 99, 015016  (2019)] 3+1+NSI case with (a) , (b) , , Baroque Neutrinos

21. Other data Super-K Solar Baroque Neutrinos

22. Summary • MINOS+ and IceCube data present a big challenge to the simple 3+1 explanation of the LSND/MiniBooNE anomaly. • If the measurements of these experiments are accepted prima facie, a baroque new physics has to be introduced. • Sterile neutrino at MINOS+ can be canceled by CC NSI at the detector via . • IceCube bounds can be relaxed with large NC NSI and , or large and small and . Baroque Neutrinos

23. Thank you! Baroque Neutrinos

24. Backup slides Baroque Neutrinos

25. STEREO, 1806.02096 PROSPECT, 1806.02784 Baroque Neutrinos

26. IceCube Baroque Neutrinos

27. 1810.11940v2 Baroque Neutrinos

28. Constraints NC NSI CC NSI 0907.0097 1805.04530 Model independent bounds from neutrino oscillation data allow large diagonal NSI parameters with O(1) differences between them Baroque Neutrinos